INTERCONTINENTAL TERMINALS

COMPANY - TANK FIRE

Preliminary Data Summary

Deer Park, TX

April 28, 2019

Project #111356

Page | 1

1.0 Introduction

On March 17, 2019 Intercontinental Terminals Company (ITC) requested that CTEH® conduct air

monitoring after a tank fire at the Deer Park, TX terminal. CTEH® arrived on-site on March 17, 2019 and

began air monitoring and air sampling operations. CTEH® is currently conducting air monitoring in the

impacted tank farm, within the Houston Ship Channel, in several industrial areas near the incident site, in

community areas which currently have restricted access, and in the surrounding residential areas.

The present summary discusses real-time air monitoring data collected within those residential areas in

the community from April 27, 2019 00:00 to April 28, 2019 00:00. Residential areas are defined as

community locations outside of the industrial park, restricted access, and USCG divisions in the zone map

included in Attachment A. During this reporting period, CTEH® performed real-time air monitoring in

residential areas to the east of the ITC Tank Fire in Baytown, to the north in Channelview, to the west in

Jacinto City and Galena Park, and to the south in Pasadena, Deer Park, and La Porte.

2.0 Air Monitoring and Sampling Methods

CTEH® developed and implemented an Air Sampling and Analysis Plan (SAP) to document and quantify

the release of fugitive emissions, if any, from the incident at ground level. The SAP has been approved by

local, state, and federal representatives of the on-site Unified Command (UC). In accordance with this UC-

approved plan, detections of VOCs (volatile organic compounds) at or above 0.5 ppm require follow-up

monitoring for benzene. Benzene detections of 1 ppm or greater in the community are to be

communicated to the Federal On-Scene Coordinator. Because benzene is a VOC, initial monitoring for

VOCs can be used to determine if benzene-specific monitoring is required.

All instrumentation was calibrated at least once per day or per manufacturer’s recommendations. Target

analytes were measured as listed in Table 1, below. Roaming air monitoring was performed in community

residential areas with hand-held instruments. All hand-held air monitoring was conducted in the breathing

zone.

CTEH® has also collected analytical air samples for VOCs at 34 locations in the surrounding area at the

time of this report. These samples have, and will continue to be, sent to a 3rd-party laboratory for chemical

analysis. These data will be summarized in a separate report.

3.0 Air Monitoring Results

Attachment A provides maps of the locations of hand-held air monitoring and analytical air sampling in

community residential areas. Table 1 summarizes the results for community hand-held air monitoring.

Page | 2

Table 1: Community Hand-Held Real-Time Air Monitoring Results*

Analyte Instrument No. Readings No. Detections Range1

Benzene Gastec #121L 263 0 < 0.05 ppm

UltraRAE 61 4 0.125 – 0.55 ppm

LEL MultiRAE 2 0 < 1 %

VOCs MultiRAE 1927 10 0.1 – 0.5 ppm *In accordance with the UC-approved Air Sampling and Analysis Plan, benzene detections of 1 ppm or greater in the community are to be communicated to the Federal On-Scene Coordinator. 1Maximum detections preceded by the “<” symbol are considered non-detections below the limit of detection (LoD) value to the right.

Between April 27, 2019 00:00 to April 28, 2019 00:00, CTEH® observed and communicated detections of

benzene in locations outside of community residential areas, defined on the zone map (Attachment A).

These include detections near the ITC Tank Fire site (Impacted Tank Farm), in the industrial areas

surrounding the ITC Tank Fire site (USCG Division E), within the Houston Ship Channel (USCG Divisions A-

D), and in the industrial areas north and south of the Houston Ship Channel in Channelview (Industrial

Area). CTEH® has been and continues to actively monitor in the ship channel and industrial areas north

and south of the ship channel. These data are being provided to on-site regulatory agencies in real time.

During this reporting period, CTEH® performed real-time air monitoring in residential areas to the east of

the ITC Tank Fire in Baytown, to the north in Channelview, to the west in Jacinto City and Galena Park,

and to the south in Pasadena, Deer Park, and La Porte.

During this reporting period, CTEH® personnel observed 12 detections of VOCs, ranging between 0.1 ppm

and 0.5 ppm. For detections above the 0.5 ppm action level for VOCs, benzene readings were taken in

that location to determine if further action was required. In total, CTEH® observed four detections of

benzene in the community, all of which were located between De Zavalla Road and I-10 during a two-hour

window. All four detections were below the 1 ppm benzene action level approved by UC. During this same

two-hour window, CTEH® observed multiple non-detection readings for benzene in downwind locations

between the impacted tank farm and this community area. This suggests that the community benzene

detections observed during this reporting period were associated with sources unrelated to the impacted

tank farm.

4.0 Weather Conditions

Attachment B contains a wind rose depicting wind speed and direction for this reporting period. Data

was acquired from the Texas Commission on Environmental Quality (TCEQ) Lynchburg Ferry

meteorological station located on Tidal Road approximately 2 mi NNE of the incident site.

Page | A-1

Attachment A

CTEH Community Air Monitoring and

Sampling Locations

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Project:111356Client: ITC

City: Deer Park, TXCounty: Harris

COORDINATE SYSTEM: NAD 1983 UTM Zone 15N DATUM: North American 1983

0 52.5Miles IHand-Held Real-Time Monitoring Locations

ITC Tank Fire Deer Park, TX | April 27, 2019 00:00 to April 28, 2019 00:00

Legend""S Fire Location!( Hand-Held Real-Time Monitoring Location

LAST UPDATED: 4/28/2019 7:49:24 AM

!!SA

!!SA

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!!SA

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!!SA!!SA

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!!SA

!!SA

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!!SA!!SA

!!SA

!!SA !!SA

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!!SA !!SA

!!SA

!!SA!!SA

!!SA

!!SA""SMC038

MC037

MC036MC035

MC001

MC002

MC003

MC004

MC012

MC011

MC010MC009

MC008MC007 MC006

MC005

MC021

MC026

MC025

MC030

MC019

MC020

MC029

MC027

MC024

MC023

MC028

MC022 MC018

MC013

MC017

MC015MC014

MC016

MC031

MC032 MC033

MC034

Galena Park

Deer Park

La Porte

Pasadena

South Houston

Morgan'sPoint

Jacinto City

Houston

Baytown

Baytown

Project:111356Client: ITC

City: Deer Park, TXCounty: Harris

COORDINATE SYSTEM: NAD 1983 UTM Zone 15N DATUM: North American 1983

0 42Miles IAnalytical Air Sampling Stations

ITC Tank Fire Deer Park, TX

Legend""S Fire Location!!SA Analytical Air Stations

LAST UPDATED: 4/5/2019 1:03:06 AM

ITC Fire Location Categories 1

--===--===i Miles

0 0.5

Project: 111356

Client: ITC

City: Deer Park, TX

Page | A-2

Attachment B

Meteorological Conditions

WRPLOT View - Lakes Environmental Software

WIND ROSE PLOT:

Station #Lynchburg Ferry

COMMENTS:

Plot generated using publicly available weather data.

COMPANY NAME:

MODELER:

DATE:

4/28/2019

PROJECT NO.:

NORTH

SOUTH

WEST EAST

10.2%

20.4%

30.6%

40.8%

51%

WIND SPEED (MPH)

>= 21.58

9.72 - 21.58

7.78 - 9.72

5.83 - 7.78

3.89 - 5.83

1.94 - 3.89

Calms: 0.00%

TOTAL COUNT:

24 hrs.

CALM WINDS:

0.00%

DATA PERIOD:

Start Date: 4/27/2019 - 00:00End Date: 4/27/2019 - 23:00

AVG. WIND SPEED:

7.46 MPH

DISPLAY:

Wind SpeedDirection (blowing from)